<SEC-DOCUMENT>0001209191-15-040940.txt : 20150511
<SEC-HEADER>0001209191-15-040940.hdr.sgml : 20150511
<ACCEPTANCE-DATETIME>20150511123404
ACCESSION NUMBER:		0001209191-15-040940
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150508
FILED AS OF DATE:		20150511
DATE AS OF CHANGE:		20150511

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Invesco Municipal Opportunity Trust
		CENTRAL INDEX KEY:			0000884152
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				363810337
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		1555 PEACHTREE STREET, N.E.
		STREET 2:		SUITE 1800
		CITY:			ATLANTA
		STATE:			2Q
		ZIP:			30309
		BUSINESS PHONE:		404-439-3217

	MAIL ADDRESS:	
		STREET 1:		1555 PEACHTREE STREET, N.E.
		STREET 2:		SUITE 1800
		CITY:			ATLANTA
		STATE:			2Q
		ZIP:			30309

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Invesco Van Kampen Municipal Opportunity Trust
		DATE OF NAME CHANGE:	20100601

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
		DATE OF NAME CHANGE:	19981006

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VAN KAMPEN AMERICAN CAPITAL MUNICIPAL OPPORTUNITY TRUST
		DATE OF NAME CHANGE:	19960102

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Byron Thomas
		CENTRAL INDEX KEY:			0001399340

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-06567
		FILM NUMBER:		15849656

	MAIL ADDRESS:	
		STREET 1:		MORGAN STANLEY INVESTMENT MANAGEMENT
		STREET 2:		1221 AVENUE OF THE AMERICAS FLOOR 5
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10020
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-05-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000884152</issuerCik>
        <issuerName>Invesco Municipal Opportunity Trust</issuerName>
        <issuerTradingSymbol>VMO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001399340</rptOwnerCik>
            <rptOwnerName>Byron Thomas</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1555 PEACHTREE STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1800 NE</rptOwnerStreet2>
            <rptOwnerCity>ATLANTA</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>30309</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Portfolio Manager</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2015-05-08</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>12.77</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2847.7625</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>162.483</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reflects the purchase price of $12.77.</footnote>
        <footnote id="F2">Includes 9.8112 shares acquired under the dividend reinvestment plan.</footnote>
        <footnote id="F3">Includes 0.864 shares acquired under the dividend reinvestment plan.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Todd L.Spillane, as Attorney in Fact</signatureName>
        <signatureDate>2015-05-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
